Vehicle orientation detecting device for an automotive vehicle o

Details Vehicle orientation detecting device for an automotive vehicle o Vehicle orientation detecting device for an automotive vehicle o

1981-09-23

1984-04-17

Stearns, Richard R.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33362, G01C 1730, G01C 1738

Patent

active

044426097

ABSTRACT:
A vehicle orientation detecting device mounted in an automotive or other vehicle cancels an erroneous signal component of a first alternating voltage signal generated as a conductor is rotated so as to intersect a geo-magnetic field. The erroneous component is cancelled by electrically adjusting two phases and magnitudes of a second alternating voltage signal having the same period as the rotating conductor and a 90.degree. phase shifted second alternating voltage. The vehicle orientation is correctly derived from the phase difference between the normal first alternating voltage signal without the erroneous signal component and the second alternating voltage signal.

REFERENCES:
patent: 1774458 (1930-08-01), Tear
patent: 2036444 (1936-04-01), Tolson
patent: 2464057 (1949-03-01), Phair
patent: 4139951 (1979-02-01), Cunard et al.

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